ABSTRACT
Objective@#To establish the method for determination of tungsten and insoluble compounds in the air of workplace by inductively coupled plasma optical emission spectrometry (ICP-OES) .@*Methods@#The tungsten and insoluble compounds were digested by microwave digestion apparatus using nitric acid and hydrofluoric acid, detected by ICP-OES.@*Results@#The linearity of tungsten and insoluble compounds (as tungsten) were good at the range of 0.16-100.0 μg/ml, the minimum quantitation concentration was 0.11 mg/m3, the recovery was ranged from 81.9%-97.1%, the RSD of intra-and inter-batch precision were 0.5%-2.5% and 1.2%-4.4%, respectively.@*Conclusion@#The determination method meet the requirement of analysis and apply to the determination of tungsten and insoluble compounds in the air of workplace.
ABSTRACT
Objective@#To establish the method for determination of barium sulfate in the air of workplace. @*Methods@#The barium sulfate was collected by dichloride ethylene filter membrane and then processed by alkali fusion method. Inductively coupled plasma optical emission spectrometry (ICP-OES) was used for the detection of barium sulfate. @*Results@#The sampling efficiency was 100%, the linearity of ICP-OES was good at the range of 0.1~100.0 μg/mL, the recovery was ranged from 93.0%~97.8%, the RSD of intra- and inter-batch precision were 3.7%~7.6% and 4.7%~8.8%, respectively. @*Conclusion@#The sampling method and determination method meet the requirements of analysis and apply to the collection and determination of barium sulfate in the air of workplace.
ABSTRACT
Objective To establish a method for the determination of 8 heavy metal elements of Pb,Cd,As,Hg,Co,V,Se,Mo in iron dextran by inductively coupled plasma optical emission spectrometry (ICP-OES).Method Through selection of detection wavelengths,optimization of instrument parameters,verification of matrix effect interference and investigation of internal standard for correction of matrix effect interference,the 8 heavy metal elements were analyzed by ICP-OES.Results The recovery rate of the detected elements were increased from 83％-90％ to 94％-100％,after correction of matrix effect interference by internal standard method.The accuracy of the method were good.The spiked recoveries of the detected elements were from 94.3％ to 101.5％.The precision of the method were good (RSD ＜ 3.5％,n =6).The linearities of the detected elements were good,and the correlation coefficients were all greater than 0.999.The detection limits were from 0.22 to 8.54 ng/mL.The quantization limits were from 0.68 to 25.73 ng/mL.Conclusion The established method was accurate,sensitivity,rapid and reliable,which can be applied to the determination of contents of 8 heavy metal elements in iron dextran.
ABSTRACT
Objective To establish a method for the determination of 8 heavy metal elements of Pb,Cd,As,Hg,Co,V,Se,Mo in iron dextran by inductively coupled plasma optical emission spectrometry (ICP-OES).Method Through selection of detection wavelengths,optimization of instrument parameters,verification of matrix effect interference and investigation of internal standard for correction of matrix effect interference,the 8 heavy metal elements were analyzed by ICP-OES.Results The recovery rate of the detected elements were increased from 83％-90％ to 94％-100％,after correction of matrix effect interference by internal standard method.The accuracy of the method were good.The spiked recoveries of the detected elements were from 94.3％ to 101.5％.The precision of the method were good (RSD ＜ 3.5％,n =6).The linearities of the detected elements were good,and the correlation coefficients were all greater than 0.999.The detection limits were from 0.22 to 8.54 ng/mL.The quantization limits were from 0.68 to 25.73 ng/mL.Conclusion The established method was accurate,sensitivity,rapid and reliable,which can be applied to the determination of contents of 8 heavy metal elements in iron dextran.
ABSTRACT
Objective To establish a method for the determination of eight heavy metal elements ofPb,Cd,As,Hg,Co,V,Se,Mo in iron dextran by inductively coupled plasma optical emission spectrometry (ICP-OES).Method Through selection of detection wavelengths,optimization of instrument parameters,correction of spectral interference,verification of ionization interference and investigation of suppression methods,the eight heavy metal elements were analyzed by ICP-OES.Results The recovery rate of the detected elements increased 5％ to 10％ by suppression of ionization interference.The accuracy of the method was good.The spiked recovery rates of the detected elements were from 95.7％ to 101.1％.The precision of the method were good (RSD ＜ 3.6％,n =6).The linearities of the detected elements were good,and the correlation coefficients were all greater than 0.999.The detection limits were from 0.15 to 8.09 ng/mL.The quantization limits were from 0.46 to 24.26 ng/mL.Conclusion The method was accurate,sensitivity,rapid and reliable,which can be applied to the determination of contents of eight heavy metal elements in iron dextran.